Refrigerating apparatus



Feb. 25, 1930. TfiQUP 1,748,531

REFRIGERATING APPARATUS Filed May 2, 1925- v a? 3732 E 42 3 V38 PatentedFeb. 25, 1930 UNITED STATES PATENT OFFICE.

GEORGE M. TROUP, OF DAYTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, 1'0

IRIGDAIRE CORPORATION, A

CORPORATION OF DELAWARE REFRIG ERATING APPARATUS Application filed May2,

The present invention relates to valves and particularly to outletvalves for compressors. It is among the objects of the present inventionto simplify the construction, to re- 5 duce the cost of manufacture, toprovide for the quiet operation, and to improve the general constructionof the above type of valve.

Further objects and advantages of the resent invention will be apparentfrom the ollowing description, reference being had to the accompanyingdrawings, wherein a preferred form of the present invention is clearlyshown.

In the drawings:

Fig. 1 is a top plan view of the improved valves showing same attachedto a valve plate of a compressor. V

Fig. 2 1s a sectional view of a compresso showing the valves, thesection being taken on line 2-2 of Fig. 1, and

Fig. 3 is an enlarged fragmentary sectional view of the invention.

Referring to the drawing, a compressor 20 is shown provided with twocylinders 21 and 22 which receive two pistons 23 and 24;. The head ofeach piston is provided with inlet valve 25 throu h which fluid passesfrom the crank case 0% the compressor into the compression chamber ofthe cylinder. The top of the cylinders 21 and 22 carries a valve plate27 -which in turn carries a cylinder head 28. The valve plate 27 isprovided with ports 29 and 30 and valve seats 31 and 32 for thecylinders 21 and. 22, respectively.

The plate 27 is provided with recesses 33 surrounding the seats 31 and32.

The valves for the seats include a leaf spring 35 which extends beyondthe valve seats 31 and 32. Buttons 36 and '37 constructed ofnon-metallic vibration-absorbing material such as bakelized Paper or thelike, are interposed between lea spring 35 and a second leaf spring 39,and are of such length as to cause the spring 39 to be deflected to tendto hold the spring 35 upon the seats 31 and 32. A plate 40 is interposedbetween springs 35 and 39 and is perforated as at .0 to receive buttons36 and 37, and provides a guide for said buttons. The leaf springs 351925. Serial No. 27,378.

spring 35 and guide plate 40 adjacent the middle of the spring toprovide a clearance between the plate and theend of the spring so thatthe spring may function as a flapper valve. The plate likewise serves asa-stop for limiting the amount of opening of the valve.

The improved valve is relatively simple in construction and, uiet inoperation. A flat leaf spring functions as a valve and is held againstits seat by a second flat leaf spring. If during the operation of thevalve, spring'35 should separate from the buttons 36 and 37 or shouldthe buttons separate from spring 39, there will be substantially nonoises created by the re-engagement of the elements, because the buttonsare constructed of material, such as bakelized paper which whenengagedby said springs will a sorb impacts and vibrations andconsequently will produce substantially no noise.

While the form of embodiment of the present invention as hereindisclosed, constitutes a preferred form, it is to be understood thatother formsmight be adopted, all coming within the scope of the claimswhioh follow.

What is claimed is as follows;

1. Valve apparatus comprising, in combination, a valve seat, a'flapvalve coogerating with said seat, a spring, a member isposed betweensaid valve and spring whereby said valve is normally held on the seatthrough the action of said sprin and a guide for said member, interposedlietween the valve and. spring.

2. Valve apparatus comprising, in combination, a valve seat, a flapvalve cooperating with said seat, a spring, a member dispose betweensaid valve, and'spring whereby said valve is normally held on the seatthrough the action of said spring, a'guide for said memher, and meanscommon to said valve and spring for maintaining said valve inoperativerelation with the seat andfor maintainin the spring inoperative relation with the v ve.

3. Valve apparatus comprising, in combination, a Valve seat, a flapvalve cooperating with said seat, a spring, a member isposed betweensaid valve and spring whereby said valve is normally held on the seatthrough the action of said spring, a guide for said member, and a singlemeans for maintaining said valve in operative'relation with the seat andfor maintaining said member in operative re lation with the valve andspring.

' 4. Valve apparatus comprising, in combination, a valve seat, a flap va'e cooperating with said seat, a spring, a member disposed between saidvalve and spring whereby said valve is normally held on the seat throughthe action of said spring, a. guide for said member, and means common tosaid spring and guide for maintaining said member in operative relationwith the valve and for maintaining said spring in operative relationwith the memberthe seat through the action of said spring,

a guide for said member, and means common to said valve and to saidspring and to said guide for maintaining said valve and said spring andsaid member in operative relation with one another.

nation, a plurality of valve seats, valves comprisin a leaf springcovering said seats, a secon leaf spring, members disposed between eachspring adjacent the valve seats whereby the first leaf spring isnormally held on the seats through the action of the second leaf spring,and a guide for said members.

7. Valve apparatus comprising, in combination, a plurality of valveseats, valves comprising a leaf spring covering said seats, a secondleaf spring, members disposed between each spring adjacent the valveseats whereby the first leaf spring is normally held on the seatsthrough the action of the second leaf spring, a guide for said members,and means for maintaining the leaf springs and guide in holdincooperative relation.

8. Valve apparatus comprising, in combination, a valve seat, a flapvalve cooperating with said seat, a spring, a vibration-absorbing memberdisposed between said valve and spring whereby said valve is normallyheld on the seat through the action of said spring,

and a guide for said member.

9. Valve apparatus comprising in combination, a valve seat, a flap valvecooperating with the seat, a spring, a thrust member between the valveand spring for yieldin ly the valve against the seat, 811C? a guide orthe thrust member.

10. Valve apparatus comprising in combination, a valve seat, a flapvalve cooperating with the seat, a spring, a thrust member between thevalve and spring for yieldingly holding the valve againstthe seat, meansfor maintaining the valve in operative relation with the seat, and aguide for the thrust member formed in said means.

11. Valve apparatus comprising in combination, avalve seat, a flap valvecooperating with the seat, a spring, a thrust member between the valveand spring for yieldingly holding the valve against the seat, a spacingmeans between the spring and valve, said spacing means maintaining thevalve in operative relation with the seat, and a guide for the thrustmember formed inthe spacing means.

12. Valve apparatus comprising in combination, a valve seat, a flapvalve cooperating with the seat, a spring, a thrust member between thevalve and spring for yieldingly holding the valve against the seat, astop for limiting the movement of the valve, and a guide for the thrustmember formed in said sto 1%. Valve apparatus comprising in combination,a valve seat, a flap valve cooperating with the seat, a spring, a thrustmember between the valve and spring for yieldingly holdingthe valveagainst the seat, and spacing means between the valve and the spring,said'spacing means providing a stop for 11miting the movement of thevalve. 6. Valve apparatus comprising, in combi- In testimony whereof Ihereunto aiiix my

